1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fd2580ecb0fd1b253dd27e3a66b721bd5011ebee7c821f09472c136dc270d6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9130c42-2ba0-46f7-93c5-644a97bb97fd.json and https://artists.proofprofile.net/proofs/artist/d9130c42-2ba0-46f7-93c5-644a97bb97fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nicht für ein Land (feat. Sammy Amara & Broilers)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6631a767635aee328ac541517400fdf42dfe911faf7dccbff23641374f3aa08b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKF22200913.
Nicht alles endet irgendwann (aus "Sing meinen Song, Vol. 11")
Tim Bendzko bei Sing meinen Song, Vol. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3a73b26f979bcf21449b5705ba2dd85875fe3abbaff090cdbdd6ae60837280. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400112.
Fette wilde Jahre (aus "Sing meinen Song, Vol. 11")
Sammy Amara bei Sing meinen Song, Vol. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad653a811a6be9afb8c026860e75653be00f67bdfc0f759978d1acccc958cbde. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400066.
Ohne zurückzusehen (aus "Sing meinen Song, Vol. 11")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf71f02ff5f52093a44d88176ef9f725029d0d11d7c80b34d491ecaa6693cd52. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400069.
Wann immer (aus "Sing meinen Song, Vol. 11")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e30887d1a2420462f3c537d7901b16d9910bef0cd229d991007051cb0c8671. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400086.
Winter (aus "Sing meinen Song, Vol. 11")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988bc1314d3f23f9465dfb82b2d7010ac788846ddea3252621e7cb2807be4041. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400091.
Das wird schon (aus "Sing meinen Song, Vol. 11")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213a80d081a920ad4ba7737c808c2e605729bd090233e08e155d82227df46de0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400093.
Put in Work (aus "Sing meinen Song, Vol. 11")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10700ea8a74df2e9bb399c58b65e10f8e883fee63ad5fb881cc6a5c062ab440d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ba65037746dad3f1ea3aecabd9bb2aafb69ad9cd2af007615cd0ec1f2a8080. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf71f02ff5f52093a44d88176ef9f725029d0d11d7c80b34d491ecaa6693cd52. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad653a811a6be9afb8c026860e75653be00f67bdfc0f759978d1acccc958cbde. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf71f02ff5f52093a44d88176ef9f725029d0d11d7c80b34d491ecaa6693cd52. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad653a811a6be9afb8c026860e75653be00f67bdfc0f759978d1acccc958cbde. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad653a811a6be9afb8c026860e75653be00f67bdfc0f759978d1acccc958cbde. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201018bc23b8996c229a636caab78379e54b39ffd977365748e4616ffd28f31d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKF22300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e3adda02e4bff864f65b632513c752eb5f4ca01e04d59b3eb802263be2685f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DED832300687.